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參數(shù)資料
| 型號： | PEB24902 |
| 廠商： | SIEMENS A G |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | Quad ISDN Echocancellation Circuit Analogue Front End Quad IEC AFE |
| 中文描述： | DATACOM, ISDN ECHO CANCELLER, PQFP64 |
| 文件頁數(shù)： | 23/50頁 |
| 文件大?。?/td> | 502K |
| 代理商： | PEB24902 |
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PEB 24902
PEF 24902
Technical Description
Semiconductor Group
23
05.96
Note that the load capacitors are integrated in the PEB 24902. No additional capacitance
has to be connected neither to XIN nor to XOUT. The crystal specifications shall meet
the requirements given in
table 4
.
A suitable type of crystal would be:
Vibrator:
Mode of vibration
DS
fundamental
Crystal cut
ATI
3.2
The Quad IEC AFE Chip gives access to four line ports. The signal to be transmitted is
issued differentially at pins AOUT1..4 and BOUT1..4. The input is differentially sampled
at AIN1..4 and BIN1..4. Each line port consists of three main function blocks:
– the analogue-to-digital converter in the receive path
– the digital-to-analogue converter in the transmit path
– the output buffer in the transmit path
Furthermore a line port contains some special functions. These are:
– analogue test loop-back
– level detect function
Analogue Line Port
Table 4
Specification of the crystal
Parameter
Nominal frequency
Total frequency range
Operating frequency
C
Load
= 15 pF
C
Load
= 7 pF
Current
Load capacitance
Overall tolerance
f/f
Resonance resistance R
r
Shunt capacitance C
0
Motional capacitance C
1
Overall Pullability
Min
Typ
Max
Units
MHz
ppm
15.360000
-150
+150
15.35770
-
-
15.36230
2
10.2
60
MHz
MHz
mA
pF
ppm
Ohm
pF
fF
ppm
1
9.8
20
7
25
+- 210
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PEB24902/11 | 制造商:PULSE 制造商全稱:Pulse A Technitrol Company 功能描述:TELECOMMUNICATIONS PRODUCTS |
| PEB24902H | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| PEB24902-HV1.1 | 制造商:Siemens 功能描述:Part Number Only |
| PEB24902HV2.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| PEB24902HV21XP | 制造商:Lantiq 功能描述:ISDN U 1-Line 15.36Mbps 5V 64-Pin MQFP |
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